Vibration-Isolating Mount, Vibration Isolator Style One Threaded Stud, Maximum Load Downward Compression 60 lbf, Overall Diameter 1 in, Height 0.63 in, Stud Length 0.63 in, Thread Size 5/16 In.-18, Includes -, Isolator Material Rubber, Mounting Compression, Resistant To Abrasion, Shape Cylindrical, Stud or Tap Material Clear Zinc-Plated, Grade 5 This cylindrical vibration isolator is compression-mounted to control noise, vibration, and shock. The 50 durometer, natural rubber pad is chemically bonded to the steel with superior abrasion resistance and high tensile strength.